Carbon water filter

ABSTRACT

EACH FILTER MATERIAL; AND OUTLET MEANS FOR DELIVERING LIQUID FROM SAID CHAMBER TO THE OUTSIDE OF SAID TANK. 7. A FILTER COMPRISING: A TANK; INLET MEANS FOR DELIVERING LIQUID TO SAID TANK; A FILTER ELEMENT DISPOSED IN SAID TANK INCLUDING: A CHAMBER FORMED BY A CYLINDER HAVING OPENINGS THEREIN, A FILTER CLOTH DISPOSED AROUND SAID CYLINDER AND COVERING SAID OPENINGS, SAID FILTER CLOTH BEING SECURED TIGHTLY AT EACH END THEREOF AND ROUND THE CYLINDER, SAID FILTER CLOTH BEING PRECOATED WITH A MIXTURE OF ASBESTOS FIBERS, POWDERED ACTIVATED CARBON AND DIATOMACEOUS

21, 1975 5. w HOSTETTER Re. 28.3 3

CARBON WATER FILTER Original Filed Nov. 21, L962 United States Patent 28,313 CARBON WATER FILTER Ernest W. Hostetter, Lincoln, Iowa, assignor to Lincoln Water Clinic, Conrad, Iowa Original \lo. 3,6l2,279, dated Oct. 12, [971, Ser. No. 878,693, Nov. 2!, 1969. Application for reissue Oct. II. 1973, Ser. No. 405,859

Int. Cl. 801d 29.24 U.S. Cl. 1l0--l70 Claims Matter enclosed in heavy brackets appears in the original patent but forms no part of this reissue specification: matter printed in italics indicates the additions made by reissue.

=-RAC'I OF THE DISCLOSURE A filter for liquid, including well water, comprised of tour large tubes, plugged at their ends and suspended vertically as a unit within a tank. The liquid is introduced III) the tank ll'l such a manner as to be sprayed in diverse directions near the tank's bottom to assure even circulatron. The circulation [5 through circumferential slots or perforations in the tubes, but the liquid must first pass through a filter cloth wrapped around each tube, this cloth being coated with a mixture of activated powdered car- 7.

hon, diatomaceous earth, and fiber, During this How through the mixture, the filter cloth, and into the tubes through the slots or perforations, the taste of chlorine, ust, sediment, or any other undesirable substance is removed from the liquid. The tubes are connected with each other at their tops. from which connection is an outlet for the liquid.

STATEMENT OF THE INVENTION This invention relates to filters and, more particularly, to activated chemical filters for filtering well water and the like.

OBJECTS OF THE INVENTION It is an object of the invention to provide an improved filter.

Another OblECl of the invention IS to provide a filter that is simple in construction, economical to manufacture, and simple and efficient to use.

DESCRIPTION OF THE DRAWINGS FIG. I IS a schematic view of a filter according to the invention connected to a well.

FIG. 2 is a longitudinal cross sectional view of the filter shOWIHg one cylinder at half section and the othe cylinder at the left uncovered.

FIG. 3 is a bottom [top] view of the filter DETAILED DESCRIPTION OF THE DRAWINGS Now with more specific reference to the drawings, the nlrer is shown supported in a filter container which may be in the form of a tank 10, having a cover 11, inlet tube 13 and 21. and outlet tube 14 supported on the cover by anv suitable means. [of suitable locknuts and the] Filter elements 23 are [filter being] disposed in the tank. The tank. may be, for example, a tank 33 inches deep and 9 inches in diameter.

The inlet pipe 13 extends down and terminates in U shaped pipes 15 which have openings 16 therein [in their upper sides so that water will be directed up toward the cylinders]v The cylinders 12 have closed ends I9 and which [and] have openings 17 in their upper ends 20 which are connected to the pipes 22. [The upper ends of he pipes are plugged with plugs 20 which may be of cedar or redwood] A filter cloth 29 [23] is rapped Till around each of the hollow cylinders and rs held m DlJL'L by clamps 24.

The water may be supplied from a well 33 by u pum 32. Chlorine may be injected into the well from a con tainei or chemical feed pump and the container lll may be connected to the outlet pipe 14 as shown.

The cylinders 12 may be, for example, three inches ll'l diameter and 33 /4 inches long with three rows of slots in each circumferential row. There may be 4t slots in each row, making a total of 123 slots In. each tube. for example. The large tubes or hollow cylinders 12 are plugged with /s-inch disks 19 and 20 of dried cedar or red wood at each end. The hollow cylinders 12 are cot ered with filter cloth 29, FIG. 2 showing the cylinder at the left uncovered for better illustration. The filter .lolh 29 is held in by stainless steel clamps 24. The filter cloth 29 is precoated with a mixture of powdered. activated carbon, a material sold under the trademark "Aquw Nuchar" prepared by the West Virginia Pulp 81 Paper Company of Covington, Va. and with Fibra-Flo," which is a trademark for a product sold by the Johns-Manvrlle Company. The Fibra-Flo" material is a mixture of chrysotile asbestos fibers and a material known as Hy flow Super-Cel. a trademrak owned by the Johns Man ville Company. The asbestos accounts for about lll z per cent of the weight of the mixture. The "Hyfiow Super Cel" is a diatomoceous earth filter material As the chlorine in the water is drawn from the top in the filters, through the carbon precoat, the taste of chlorine and rust are removed from the water. The chlorine is placed in the well 33 [23] by means of a comm/re or small chemical feed pump 25, which operates in con junction with the water pump 32. A ZO-gallon container may be used as a supply for chlorine indicated at 25. The chlorine may be provided by means of a five percen chlorine bleach.

The filter elements 23 are [core is] precoated by filling about eight inches of water in the bottom of the tank 10. then the precoat material is thoroughly mixed in. The tanlr is then filled to within eight inches to ten inches of the top and well mixed. Then the core is gradually lowered lllll. the tank and the cover replaced [bolted in place] The water is then allowed to flow from the filter through pipe 14 [a faucet] to a drain until it is clear and all the finc particles of carbon are washed out. The filter is then ready for use.

When the flow of water through the filter has deminished below the desired rate of flow, the core. [HF/ltding filter elements 23, is removed, washed off of old car bon and rust and new charge is put in. The [and the] filter is then ready for reuse. The tank 10 may be drained by faucet 31.

The foregoing specification sets forth the invention n its preferred practical forms, but the structure shown i capable of modification within a range of equivalents without departing from the invention which is to be un derstood is broadly novel as is commensurate with [he appended claims.

The embodiments of the invention which an CXC SE property or privilege is claimed are defined as follows [1. A filter comprising at least one hollow tvlinde: plugged at each end,

a pipeline connected in series with the inside or said cylinder,

said cylinder having openings formed III its outside surface,

a filter cloth disposed around the outside at said cylinder,

a container,

said cylinder being disposed in said container,

said pipe being adapted to be connected to a water pp y.

ind outlet means troin said container.

at least four said cylinders being provided Sald cylin= ders having closed ends.

Mild cylinder being disposed in side-by-side 161311011,

1 tank old cylinders being supported in said tank,

1 nine connected o the top of said tank and terminating in 4 generally U-shaped portion disposed below said i vllmle i s'dld L'whapd pOrllnl'l of said pipe having spaced openll'lg therein -in outle pipe connected through said container to the outside thereof;

openings in the side wall of each said cylinder lll'ld a fillet web disposed around each said cylinder.

and web be ng coated with a material containing activated carbon said tank being connected to a water supply from a well containing iron and chlorine.

a imp lot i wiping said water from said well to said l'iltet.

a d ispensing means connected to said well for introducing chloride into said well] [Z The filter ecited in claim 1 wherein said filter web is held in place by straplike clamps] [3 The filter recited 11']. claim 1 wherein said filter web is a filter clothlike material] [4 The filter recited to claim 3 wherein said outlet pipe: is connected to two generally U-shaped pipes, one cn= nected to the closed end of each said cylinder] [5 The filter recited in claim 4 wherein each said cy11n= der has a plurality of circumferentially disposed slots] [6 The filter recited in claim 1 wherein means is pro vided for directing water from the inlet pipe to a position below said cylinders] 7 4 filter comprising a tank.

inlet means for delivering liquid to said tank;

a filter element disposed in said tank including:

a chamber formed by a cylinder having openings therein,

a filter cloth disposed around said cylinder and covering said openings. said filter cloth being secured tightly at each end thereof and round the cylinder, said filter cloth being precoated with a mixture of asbestos fibers, powdered activated carbon and diatomaceous each filte material, and

utlet means for delivering liquid from said chamber to the outside of said tank,

8 Flu filter of claim 7 whe ein the inlet means com- ("L283 a pipe extending to a point near the bottom of said tan 9 The filter of claim 8 wherein said pipe has a portion having series of small orifices therein at the point near the bottom of the tank,

H7 The filter of claim 9 wherein the portion of the pipe ha mg the orifices therein is U-shaped and lies in a plane generally parallel to the bottom of the tank,

If the filter of claim 7 wherein the openings in said rytmde are in the shape of an elongated slots lite fitter of claim 7 wherein the cyltntte 'm: wooden caps in the ends thereof to there/7v form ends tor the chamber 13 The filter of claim 7 wherein a plurality of filter elements are disposed in said tank and connected to said outlet means 1 1 The filte of claim [3 wherein said outlet means comprises a man fold having a passageway connecting the inside of the tank with the outside of the tank and a series of pipes connecting each respective chamber to run! pas mgeway 15 [he filter of claim [3 wherein the numbe r f lt elements is four 16 The filter of claim 7 wherein rt pipeline is tutor ied in .t'ltleS with the outlet means I7 lhe filter of claim 7 wherein said tank ha a drummg means for draining the tank 18 The filter of claim 7 whet-em i1 chlorine dfll tnslnk means is connected upstream of said inlet means 19. The filter of claim 7 wherein said inlet meantis run nected to a water supply 20, The filter of claim 7 wherein said tank is enclosed 1! the top thereof to form a pressure tank,

21 A filter comprising;

a tank;

inlet means for delivering liquid to said tank entering the top of said tank and terminating in a U-shaped portion having orifices therein near the bottom of the tank, said U-shaped portion lying in a plane generallv parallel to the bottom of the tank;

a filter element disposed in said tonl: including;

a chamber formed by a cylinder having slot shaped openings therein;

a filter cloth disposed around said cylinder and covering said openings, said filter cloth being secured tightly at each end thereof and around the cylinder; and outlet means at the top of the tank for delivering liquid from said chamber it; the outside of said tank- References Cited The following references, cited by the Examiner are of record in the patented file of this patent or the original patent UNITED STATES PATENTS 585,497 6/1897 Aufrichtig "WW" 210-456 X 3,327,859 6/1967 Pall 210-266 539,800 5/1895 Durant 210-460 1,591,229 7/1926 Oliver et al t W 210-333 K 1,905,919 4/1933 Levis .M 210-460 2,249,020 7/1941 McFarlin 210-4 0 625,2 1 1953 Schuller 210-333 X, 2,820,701 1/1958 Leslie 210-289 X 3,276,588 10/1966 Nehrbass et a1 210-289 X 2,269,725 1/1942 Malanowski -s .s 210-191 K FRANK A SPEAR, JR., Primary Examiner US. Cl. X Rt 

